Neat that you had to do it many times to learn. Personally I use the brakes on my bike and truck to keep from hitting the back of the vehicle in front.I think she did us all a favor by dropping out and never riding again. You are not suppose to hit the vehicle in front of you, especially at those slow speeds. I learnt my lesson only after years of riding. I rear-ended 3 cars in about a 10-year span when they suddenly stopped cold in a yellow light instead of continuing. But when I hit them my speed had been reduced to 10 km/h so my bike didn't get damaged much less their car. Now I travel at 2 cars' length away from cars inside the city at 50 to 60 km/s and about 5 or 6 car lengths away in the highway. It has worked like a charm, have not rear-ended anyone since then.
Sent from the future